by 2040 no metric ton of fossil fuels will be transported anymore

I seriously doubt it. Many countries are decarbonising like the UK has by getting rid of coal fired power stations and switching to renewables plus gas, because gas is a good way to solve the intermittency issues you get with many renewables. 2040 is not very far away, on that timescale the demand for LNG may actually go up.

Big whoosh

Jesus, how high were the parents when they made that decision?